Degradation mechanism for planar heterojunction perovskite solar cells

被引：12

作者：

Yamamoto, Kouhei ^{[1
]}

Furumoto, Yoshikazu ^{[1
]}

Shahiduzzaman, M. ^{[1
]}

Kuwabara, Takayuki ^{[1
]}

Takahashi, Kohshin ^{[1
]}

Taima, Tetsuya ^{[1
,2
]}

机构：

[1] Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan

[2] Kanazawa Univ, Inst Frontier Sci Initiat InFIniti, Kanazawa, Ishikawa 9201192, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2016年 / 55卷 / 04期

关键词：

ORGANOMETAL HALIDE PEROVSKITES; EFFICIENCY; CH3NH3PBI3; HUMIDITY; LIGHT; LAYER;

D O I：

10.7567/JJAP.55.04ES07

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Organic-inorganic hybrid perovskite materials have recently emerged as a promising cost-and energy-efficient light absorber material for photovoltaic applications. Unfortunately, perovskite solar cells have a problem with decreasing power conversion efficiency owing to their degradation in air. To clarify the cause of the degradation of perovskite solar cells, we exposed deposited CH3NH3PbI3 and HC(NH2)(2)PbI3 films to an O-2 or (H2O+N-2) atmosphere condition. Analysis of these films revealed that a large energy band gap was observed as a result of the influence of the H2O molecule in CH3NH3PbI3 and HC(NH2)(2)PbI3. Under the (H2O+N-2) atmosphere condition, the existence of CH3NH3I and HC(NH2)(2)I molecules was found to affect the morphology and as well as the crystalline diffraction peak. The resultant perovskite crystalline structure was degraded by H2O molecules under the air exposure condition. (C) 2016 The Japan Society of Applied Physics

引用

页数：4

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